Medicare Advantage in Matagorda County, Texas
4,463 people in Matagorda County, Texas were enrolled in Medicare Advantage in October 2026, 54.1% of 8,252 eligible beneficiaries (+0.5 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 50% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 3,217 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 1,348 members here are in plans that terminate or leave the county, and Centene Corporation, Health Care Service Corporation leave. MA plans offered go from 26 to 16.
Parent organizations in Matagorda County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 2,217 | +16 | 50.1% |
| Humana Inc. | 824 | +169 | 18.6% |
| Centene Corporation | 616 | +22 | 13.9% |
| CVS Health Corporation | 546 | −93 | 12.3% |
| Elevance Health, Inc. | 151 | +46 | 3.4% |
| Health Care Service Corporation | 60 | −14 | 1.4% |
| Molina Healthcare, Inc. | 11 | new | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 236 beneficiaries in Matagorda County were assigned to 34 Medicare Shared Savings Program ACOs, 8.6% of assignable Original Medicare beneficiaries. Together, roughly 58% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.